名词
中文翻译：手动报警系统同义词
同义词：
['manual alert system', 'manual alarm device', 'manual warning system']
例句：
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1. The security guard uses a manual alarm system to alert the authorities in case of an emergency.
保安使用手动报警系统在紧急情况下通知当局。
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2. The elderly often rely on their own manual alarm systems to stay safe during power outages.
老年人经常依靠自己的手动报警系统在停电期间保持安全。
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3. The manufacturer has designed a manual alarm system that can be easily installed and maintained by individuals.
制造商设计了一种手动报警系统，可以由个人轻松安装和维护。